    <!doctype html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>css</title>
    </head>
     <link rel="stylesheet" href="../css/test.css">
    <body>
        <ul class="a">
            <li>产品</li>
            <li>质量</li>
            <li>网页</li>
            <li>客服</li>
            <li>售后</li>
        </ul>
    </body>
    </html>